package com.atguigu.lease.common.utils;

import com.atguigu.lease.common.exception.LeaseException;
import com.atguigu.lease.common.result.ResultCodeEnum;
import io.jsonwebtoken.*;
import io.jsonwebtoken.security.Keys;

import javax.crypto.SecretKey;
import java.util.Date;

/**
 * description:
 *
 * @author:MING
 * @time:2025-03-06-19:29-06
 * @version:
 */
public class JwtUtil {


    private static long tokenExpiration = 60 * 60 * 1000L;
    private static SecretKey tokenSignKey = Keys.hmacShaKeyFor("M0PKKI6pYGVWWfDZw90a0lTpGYX1d4AQ".getBytes());

    public static String createToken(Long userId, String username) {
        String token = Jwts.builder().
                setSubject("USER_INFO").
                setExpiration(new Date(System.currentTimeMillis() + 360000*24*365L)).
                //claim是自定义字段
                claim("userId", userId).
                claim("username", username).
                signWith(tokenSignKey).
                compact();
        return token;
    }

    public static Claims parseToken(String token) {
        if(token==null){
            throw new LeaseException(ResultCodeEnum.ADMIN_LOGIN_AUTH);
        }
        if(token==null){
            throw new LeaseException(ResultCodeEnum.ADMIN_LOGIN_AUTH);
        }
        try {
            JwtParser jwtParser=Jwts.parserBuilder().setSigningKey(tokenSignKey).build();
            Jws<Claims> claimsJws = jwtParser.parseClaimsJws(token);
            return claimsJws.getBody();
        }catch (ExpiredJwtException e){
            throw new LeaseException(ResultCodeEnum.TOKEN_EXPIRED);
        }catch (JwtException e){
            throw new LeaseException(ResultCodeEnum.TOKEN_INVALID);
        }


    }

    public static void main(String[] args) {

        System.out.println(createToken(2L,"user"));
    }
}